'Syn addition' diaporamas de présentation

Alkene Reactions

Alkene Reactions. Pi bonds. Reactivity above and below the molecular plane!. Plane of molecule. Addition Reactions. Important characteristics of addition reactions Orientation (Regioselectivity) If the doubly bonded carbons are not equivalent which one get the A and which gets the B.

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Which has the highest BP? The lowest?

Which has the highest BP? The lowest?. Which will be miscible with each other?. Alkenes. Addition Reactions Synthesis. Addition Reaction is a Two-Step Mechanism. Which is the Nucleophile? The Electrophile?.

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Alkenes: Chapter 8 Reactions of Alkenes

Organic Chemistry , 5 th Edition L. G. Wade, Jr. Alkenes: Chapter 8 Reactions of Alkenes. Reactivity of C=C. Electrons in pi bond are loosely held. Electrophiles are attracted to the pi electrons. Carbocation intermediate forms. Nucleophile adds to the carbocation.

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Chapter 18 Additions to the Carbonyl Groups

Chapter 18 Additions to the Carbonyl Groups. Nucleophilic substitution (S N 2 and S N 1) reaction occurs at sp 3 hybridized carbons with electronegative leaving groups Why? The carbon is electrophilic!.

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Chapter 8 Alkenes and alkynes I. Properties and synthesis

Chapter 8 Alkenes and alkynes I. Properties and synthesis. 8.1 Introduction Alkenes are hydrocarbons whose molecules contain the carbon-carbon double bond. Hydrocarbons whose molecules contain the carbon-carbon triple bond are called alkynes. 8.2 Nomenclature of alkenes and cycloalkenes.

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Organic Chemistry

Organic Chemistry. Stereochemistry. Isomers. compounds with the same molecular formula but not identical structures. Constitutional Isomers (conective isomers). Constitutional isomers differ in the way their atoms are connected. Stereo Isomers (configurational isomers).

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Chapter 6; Addition Reaction of Alkenes part 2

Chapter 6; Addition Reaction of Alkenes part 2. HX Addition Electrophilic Addition (Markovnikov Product) Free Radical Mechanism (Anti-Mark Product) Hydration (+ H 2 O) Halogenation/ Hydrohalogenation Reduction or Hydrogenation (+ H 2 ) Oxidation Multi-step Synthesis. + X 2. C. C. C.

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How Do You Hydrate a Double Bond?

How Do You Hydrate a Double Bond?. The problem with this approach is that yields are low, and carbocation rearrangements can complicate the results. We need a better approach!. Oxymercuration of an Alkene. Yields are high, there are no rearrangements, and the conditions are milder .

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How Do You Hydrate a Double Bond?

How Do You Hydrate a Double Bond?. The problem with this approach is that yields are low, and carbocation rearrangements can complicate the results. We need a better approach!. Oxymercuration of an Alkene. Yields are high, there are no rearrangements, and the conditions are milder .

997 views • 34 slides

Alkenes II-continued 1. Types of Rxn.: elimination, addition, substitution

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CHE-240 Unit 3

CHE-240 Unit 3. Physical and Chemical Properties and Reactions of Alkenes and Alkynes CHAPTER EIGHT TERRENCE P. SHERLOCK BURLINGTON COUNTY COLLEGE 2004. Reactivity of C=C. Electrons in pi bond are loosely held. Electrophiles are attracted to the pi electrons.

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Reactions of Alkenes: Addition Reactions

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Chapter 6 Reactions of Alkenes: Addition Reactions

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Organic Chemistry Reviews Chapter 8

Organic Chemistry Reviews Chapter 8. Cindy Boulton November 23, 2008. Chapter 8. Memorize reactions! Alkene or Alkyne Reactants Products Regiochemistry Markovnikov or Anti-Markovnikov Stereochemistry Syn addition or Anti addition or racemic mix Mechanism Pg 354-355 Practice!.

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Organic Chemistry Reviews Chapter 8

Organic Chemistry Reviews Chapter 8. Cindy Boulton November 22, 2009. Chapter 8. Memorize reactions! Alkene or Alkyne Reactants Products Regiochemistry Markovnikov or Anti-Markovnikov Stereochemistry Syn addition or Anti addition or racemic mix Mechanism Pg 354-355 Practice!.

326 views • 18 slides

Advanced Organic Chemistry focusing on addition reactions

Advanced Organic Chemistry focusing on addition reactions. Electrophilic addition to C=C bonds. syn. anti. Stepwise mechanisms with intermediates as:. Type 1. Type 2. Type 3. Type 1. Type 2. carbenium ion stability: hyperconjugation. Wagner-Meerwein shift. anti. syn. Type 1.

1.15k views • 17 slides

Alkene Reactions

Alkene Reactions. Addition Substitution Diels-Alder Cleavage. Addition Reactions. Syn addition Anti addition Carbocation formation Radical formation. Syn Addition Reactions. Hydrogenation Hydroxylation Hydroboration. Anti Addition Reactions. Hydroxylation Halogenation

330 views • 14 slides

Organic A Chapter 10 (Stereochemistry of addition and elimination) By Prof. Dr. Adel M. Awadallah Islamic University of

Organic A Chapter 10 (Stereochemistry of addition and elimination) By Prof. Dr. Adel M. Awadallah Islamic University of Gaza. Addition of halogens to alkenes . Stereospecific reaction : A reaction in which stereochemically different molecules react differently.

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Organic A Chapter 10 (Stereochemistry of addition and elimination) By Prof. Dr. Adel M. Awadallah

Organic A Chapter 10 (Stereochemistry of addition and elimination) By Prof. Dr. Adel M. Awadallah Islamic University of Gaza. Addition of halogens to alkenes. Stereospecific reaction : A reaction in which stereochemically different molecules react differently.

118 views • 11 slides

YOU CANNOT CREATE A CHIRAL RESULT BY REACTION OF TWO ACHIRAL SUBSTANCES

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